Seagate 3.5", 4TB, SATA3, SkyHawk Surveillance Hard Drive, 256MB Cache

SkyHawk™ leverages Seagate's extensive experience in designing drives purpose-built for surveillance applications. 

ImagePerfect™ firmware is designed to ensure seamless video footage capture in 24x7 surveillance workloads that record video from 64 HD cameras.
SkyHawk Health Management actively helps protect your surveillance storage by focusing on prevention, intervention, and recovery options. Included is RAID RapidRebuild™, which provides 3x faster volume rebuilds over traditional RAID rebuilds.
RV sensors built in allow drives to maintain performance in multi-bay systems, giving customers the flexibility to scale their systems when more storage is needed.
ATA streaming support enables recordings from up to 64 HD cameras for smooth, uninterrupted footage.
1 M hours MTBF, 3-year limited warranty represents an improved total cost of ownership (TCO) with reduced maintenance costs.
Lower power consumption means a reduction in heat emissions, which improves reliability in surveillance solutions. Tarnish-resistant components help protect drive from environmental elements, increasing field reliability.
Unparalleled data protection with included 3-year Rescue Data Recovery Services plan, helping protect important video data with Seagate's in-house data recovery services

Specification:
Device Type    Hard drive - internal
Capacity    4 TB
Form Factor    3.5"
Interface    SATA 6Gb/s
Buffer Size    256 MB
Features    24x7 continuous operation, rotation vibration sensor, Conventional magnetic recording (CMR), workload up to 180 TB per year, tarnish-resistant
Width    101.85 mm
Depth    146.99 mm
Height    20.2 mm
Weight    490 g